ADOPTED LEVELS, GAMMAS for 187Tl

Author: M. S. Basunia |  Citation: Nucl. Data Sheets 110, 999 (2009) |  Cutoff date: 1-Nov-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-7464 keV 12S(n)= 10.32×103 keV 18S(p)= 1193 keV 14Q(α)= 5318 keV 8
Reference: 2003AU03

References:
  A  187Tl IT decay (15.60 S)  B  187Pb ε decay (15.2 S)
  C  187Pb ε decay (18.3 S)  D  191Bi α decay (12.4 S)
  E  191Bi α decay (125 MS)  F  156Gd(35Cl,4nγ)
  G  159Tb(32S,4nγ), 

General Comments:

Transition quadrupole moment Qt is related to the level lifetime by Qt(J|)J-2)=0.906|%(pγ(J|)J-2)/(|%(|t×E5γ(J|)J-2)) ×<JK20 I J-2K>) [eb] and is reported by 2005Ch38 (159Tb(32S,4nγ)) for some levels.

Measured Mass Excess: 187Tlm=-22154 keV 23 (2008We02)

Levels: The band structure is adopted from (32S,4nγ), for which the data are more extensive than that by the 156Gd(35Cl,4nγ) study. While the gross structure of the level schemes deduced from the two reactions is in agreement, there are many smaller differences which are noted in the (35Cl,4nγ) data set.










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCDE   (1/2+) ≈ 51 s
% ε = 100
% α ≈ 0.03
     
   299.33 25 ABC     (3/2+)     299.5 3 
  100
M1+E2
     0.0
(1/2+)
   334 4 A CD FG (9/2-) 15.60 s 12 
% α = 0.15 5
% IT < 99.9
% ε < 99.9
   35 4 S
 
[E3]
   299.33
(3/2+)
   677.80 20   C   G (GE5/2)     343.8 2 
  100

   334
(9/2-)
   728.10 8   C  FG (11/2-)     394.1 1 
  100
(M1+E2)
   334
(9/2-)
   747.87 25  B      (5/2+)     448.7 3 
  747.7 3 
  100 5 
   75 4 
[M1,E2]
[E2]
   299.33
     0.0
(3/2+)
(1/2+)
   871.8 4 ?  C         193.0 3 ?
  100

   677.80
(GE5/2)
   950.90 20       G (11/2-)     616.9 2 
  100

   334
(9/2-)
   996.34 8      FG (13/2-) 2.0 ps 2    268.3 1 
  662.3 1 
   18.3 26 
  100 4 
D
E2
   728.10
   334
(11/2-)
(9/2-)
  1059.65 13   C  FG (13/2+) 0.69 ns 14    331.5 1 
  726.4 4 
  100 7 
    3.3 7 
(E1)
[M2]
   728.10
   334
(11/2-)
(9/2-)
  1072.6 4 ?  C     (GE7/2)     343.5 3 ?
  100

   728.10
(11/2-)
  1204.90 20       G (GE9/2)     476.9 3 
  100

   728.10
(11/2-)
  1260.8 3       G (13/2-)     309.8 2 
  100

   950.90
(11/2-)
  1374.51 22       G     646.4 2 
  100

   728.10
(11/2-)
  1425.7 3       G (15/2-)     164.8 2 
  474.9 2 
   26 7 
  100 13 


  1260.8
   950.90
(13/2-)
(11/2-)
  1433.23 19       G (15/2-)     436.9 2 
  705.1 3 
   84 13 
  100 16 
D

   996.34
   728.10
(13/2-)
(11/2-)
  1433.23+X      G 1.11 µs      
  1444.53 23       G (15/2-)     448.4 3 
  716.2 3 
   71 13 
  100 18 


   996.34
   728.10
(13/2-)
(11/2-)
  1447.46 13      FG (17/2-) 19.6 ps +20-22    242.6 2 
  451.1 1 
   16 4 
  100 4 

E2
  1204.90
   996.34
(GE9/2)
(13/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  1452.45 16      FG (17/2+) 44 ps +5-6    392.8 1 
  100
E2
  1059.65
(13/2+)
  1463.85 24      FG (15/2+)     404.2 2 
  100
D+Q
  1059.65
(13/2+)
  1585.9 4       G (15/2-)     325.1 2 
  100

  1260.8
(13/2-)
  1630.9 3       G     256.4 2 
  100

  1374.51

  1729.8 3       G (17/2-)     304.2 2 
  468.8 2 
  100 17 
   83 14 


  1425.7
  1260.8
(15/2-)
(13/2-)
  1737.95 19      FG (21/2+) 24.7 ps 24    285.5 1 
  100
E2
  1452.45
(17/2+)
  1822.03 21       G (19/2-)     388.8 1 
  100
Q
  1433.23
(15/2-)
  1838.0 3      FG (17/2+)     374.1 2 
  778.6 5 ?
  100 19 
  ≤41
D

  1463.85
  1059.65
(15/2+)
(13/2+)
  1874.76 16      FG (21/2-) 2.3 ps +7-6    427.3 1 
  100
E2
  1447.46
(17/2-)
  1930.7 4       G     299.8 2 
  100

  1630.9

  1948.6 4       G (17/2-)     362.7 2 
  100

  1585.9
(15/2-)
  2104.25 22      FG (25/2+) 3.6 ps +7-6    366.3 1 
  100
E2
  1737.95
(21/2+)
  2254.7 4       G     324.0 2 
  100

  1930.7

  2275.8 3       G (23/2-)     453.8 2 
  100
Q
  1822.03
(19/2-)
  2300.7 3      FG     562.7 2 
  100

  1737.95
(21/2+)
  2363.16 19      FG (25/2-) < 1.1 ps   488.4 1 
  100
(E2)
  1874.76
(21/2-)
  2439.2 3       G     564.4 2 
  100

  1874.76
(21/2-)
  2546.85 24      FG (29/2+) < 1.4 ps   442.6 1 
  100
E2
  2104.25
(25/2+)
  2582.5 3       G (25/2-,27/2,29/2+) 0.69 µs 4    478.2 2 
  100
(E1,M1,E2)
  2104.25
(25/2+)
  2639.9 3       G     535.6 2 
  100

  2104.25
(25/2+)
  2673.6 3       G     798.8 2 
  100

  1874.76
(21/2-)
  2792.9 4       G (27/2-)     517.1 2 
  100
Q
  2275.8
(23/2-)
  2909.46 22      FG (29/2-)     546.3 1 
  100
Q
  2363.16
(25/2-)
  2947.8 3      FG     584.6 2 
  100

  2363.16
(25/2-)
  3057.5 3      FG (33/2+)     510.6 1 
  100
Q
  2546.85
(29/2+)
  3363.6 4       G (31/2-)     570.7 2 
  100

  2792.9
(27/2-)
  3485.3 4       G     575.8 3 
  100

  2909.46
(29/2-)
  3510.9 3       G (33/2-)     601.4 2 
  100

  2909.46
(29/2-)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  3627.4 3      FG (37/2+)     569.9 1 
  100
Q
  3057.5
(33/2+)
  3744.7 4       G     687.2 2 
  100

  3057.5
(33/2+)
  3975.5 6       G (35/2-)     611.9 4 
  100

  3363.6
(31/2-)
  4138.5 5       G (37/2-)     627.6 3 
  100

  3510.9
(33/2-)
  4248.0 3      FG (41/2+)     620.6 1 
  100

  3627.4
(37/2+)
  4910.4 3      FG (45/2+)     662.4 1 
  100

  4248.0
(41/2+)
  5608.0 5      FG (49/2+)     697.6 3 
  100

  4910.4
(45/2+)

E(level): From a least-squares adjustment to Eγ with 334-keV level holding fixed and level energies are relative to E=334-keV. For absolute uncertainty of the level energy, ΔE=4 keV of the 334-keV level should be considered in quadrature.

Jπ(level): Based on band structure and γ-ray multipolarity. Note that J values deduced in the (35Cl,4nγ) reaction are two units lower than the adopted value for levels in both the 1/2[660] and the h9/2 bands.

T1/2(level): From (32S,4nγ), except otherwise noted. T1/2 is measured through the recoil distance Doppler shift technique (32S,4nγ).

I(γ): Relative photon intensity deexciting each level; from (32S,4nγ), except as noted.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - 9/2[505] band
   334 4  (9/2-) 15.60 s 12 
% α = 0.15 5
% IT < 99.9
% ε < 99.9
     
   728.10 8  (11/2-)     394.1 1 
  100
(M1+E2)
   334
(9/2-)
   996.34 8  (13/2-) 2.0 ps 2    268.3 1 
  662.3 1 
   18.3 26 
  100 4 
D
E2
   728.10
   334
(11/2-)
(9/2-)
  1444.53 23  (15/2-)     448.4 3 
  716.2 3 
   71 13 
  100 18 


   996.34
   728.10
(13/2-)
(11/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - 1/2[660], α=+1/2 band
  1452.45 16  (17/2+) 44 ps +5-6       
  1737.95 19  (21/2+) 24.7 ps 24    285.5 1 
  100
E2
  1452.45
(17/2+)
  2104.25 22  (25/2+) 3.6 ps +7-6    366.3 1 
  100
E2
  1737.95
(21/2+)
  2546.85 24  (29/2+) < 1.4 ps   442.6 1 
  100
E2
  2104.25
(25/2+)
  3057.5 3  (33/2+)     510.6 1 
  100
Q
  2546.85
(29/2+)
  3627.4 3  (37/2+)     569.9 1 
  100
Q
  3057.5
(33/2+)
  4248.0 3  (41/2+)     620.6 1 
  100

  3627.4
(37/2+)
  4910.4 3  (45/2+)     662.4 1 
  100

  4248.0
(41/2+)
  5608.0 5  (49/2+)     697.6 3 
  100

  4910.4
(45/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - possible GS band
     0.0 (1/2+) ≈ 51 s
% ε = 100
% α ≈ 0.03
     
   299.33 25  (3/2+)     299.5 3 
  100
M1+E2
     0.0
(1/2+)
   747.87 25  (5/2+)     448.7 3 
  747.7 3 
  100 5 
   75 4 
[M1,E2]
[E2]
   299.33
     0.0
(3/2+)
(1/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 4 - possible 11/2[505] band
   950.90 20  (11/2-)        
  1260.8 3  (13/2-)     309.8 2 
  100

   950.90
(11/2-)
  1585.9 4  (15/2-)     325.1 2 
  100

  1260.8
(13/2-)
  1948.6 4  (17/2-)     362.7 2 
  100

  1585.9
(15/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 5 - 13/2[606] band
  1059.65 13  (13/2+) 0.69 ns 14       
  1463.85 24  (15/2+)     404.2 2 
  100
D+Q
  1059.65
(13/2+)
  1838.0 3  (17/2+)     374.1 2 
  778.6 5 ?
  100 19 
  ≤41
D

  1463.85
  1059.65
(15/2+)
(13/2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 6 - 1/2[530], α=-1/2 band
  1433.23 19  (15/2-)        
  1822.03 21  (19/2-)     388.8 1 
  100
Q
  1433.23
(15/2-)
  2275.8 3  (23/2-)     453.8 2 
  100
Q
  1822.03
(19/2-)
  2792.9 4  (27/2-)     517.1 2 
  100
Q
  2275.8
(23/2-)
  3363.6 4  (31/2-)     570.7 2 
  100

  2792.9
(27/2-)
  3975.5 6  (35/2-)     611.9 4 
  100

  3363.6
(31/2-)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 7 - 3/2[532], α=+1/2 band
  1447.46 13  (17/2-) 19.6 ps +20-22       
  1874.76 16  (21/2-) 2.3 ps +7-6    427.3 1 
  100
E2
  1447.46
(17/2-)
  2363.16 19  (25/2-) < 1.1 ps   488.4 1 
  100
(E2)
  1874.76
(21/2-)
  2909.46 22  (29/2-)     546.3 1 
  100
Q
  2363.16
(25/2-)
  3510.9 3  (33/2-)     601.4 2 
  100

  2909.46
(29/2-)
  4138.5 5  (37/2-)     627.6 3 
  100

  3510.9
(33/2-)

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Additional Gamma Data:















E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
   299.33 (3/2+)     299.5 3 M1+E22.0 +5-30.168α=0.168 18, α(K)=0.116 17, α(L)=0.0392 14, α(M)=0.0098 3, α(N)=0.00245 7, α(O)=0.000447 16, α(P)=2.85×10-5 24, α(N+)=0.00293 9
   334 (9/2-) 15.60 s 12 
% α = 0.15 5
% IT < 99.9
% ε < 99.9
   35 4 [E3] 6.58×104B(E3)(W.u.)=0.004 +6-4, α=6.58E4, α(L)≈4.58E4, α(M)≈1.532E4, α(N)≈3.97E3, α(O)≈661, α(P)≈17.46, α(N+)≈4.65E3
   728.10 (11/2-)     394.1 1 (M1+E2)-0.4 AP0.1686α0.1686 AP, α(K)≈0.1373, α(L)≈0.0240, α(M)≈0.00564, α(N)≈0.001422, α(O)≈0.000275, α(P)≈2.53×10-5, α(N+)≈0.001722
   747.87 (5/2+)     448.7 3 [M1,E2] 0.08α=0.08 5, α(K)=0.07 5, α(L)=0.013 5, α(M)=0.0032 11, α(N)=0.0008 3, α(O)=0.00015 6, α(P)=1.3×10-5 7, α(N+)=0.0010 4
(5/2+)     747.7 3 [E2] 0.01141α=0.01141, α(K)=0.00884 13, α(L)=0.00195 3, α(M)=0.000470 7, α(N)=0.0001182 17, α(O)=2.22×10-5 4, α(P)=1.751E-6 25, α(N+)=0.0001422 20
   996.34 (13/2-) 2.0 ps 2    662.3 1 E2 0.01478B(E2)(W.u.)=29 4, α=0.01478, α(K)=0.01124 16, α(L)=0.00269 4, α(M)=0.000652 10, α(N)=0.0001639 23, α(O)=3.06E-5 5, α(P)=2.32E-6 4, α(N+)=0.000197 3
  1059.65 (13/2+) 0.69 ns 14    331.5 1 (E1) 0.0227B(E1)(W.u.)=7.8E-6 18, α=0.0227, α(K)=0.0187 3, α(L)=0.00309 5, α(M)=0.000719 10, α(N)=0.000180 3, α(O)=3.41E-5 5, α(P)=2.83E-6 4, α(N+)=0.000217 3
(13/2+) 0.69 ns 14    726.4 4 [M2] 0.0976B(M2)(W.u.)=0.21 7, α=0.0976, α(K)=0.0780 11, α(L)=0.01500 22, α(M)=0.00357 5, α(N)=0.000904 13, α(O)=0.0001751 25, α(P)=1.620×10-5 23, α(N+)=0.001095 16
  1447.46 (17/2-) 19.6 ps +20-22    451.1 1 E2 0.0362B(E2)(W.u.)=20.3 +27-25, α=0.0362, α(K)=0.0251 4, α(L)=0.00838 12, α(M)=0.00209 3, α(N)=0.000524 8, α(O)=9.56E-5 14, α(P)=6.16E-6 9, α(N+)=0.000626 9
  1452.45 (17/2+) 44 ps +5-6    392.8 1 E2 0.0518B(E2)(W.u.)=20.6 +28-24, α=0.0518, α(K)=0.0342 5, α(L)=0.01329 19, α(M)=0.00334 5, α(N)=0.000838 12, α(O)=0.0001516 22, α(P)=9.09E-6 13, α(N+)=0.000999 14
  1737.95 (21/2+) 24.7 ps 24    285.5 1 E2 0.1286B(E2)(W.u.)=168 17, α=0.1286, α(K)=0.0721 11, α(L)=0.0425 6, α(M)=0.01087 16, α(N)=0.00273 4, α(O)=0.000484 7, α(P)=2.44E-5 4, α(N+)=0.00323 5
  1874.76 (21/2-) 2.3 ps +7-6    427.3 1 E2 0.0416B(E2)(W.u.)=2.6×102 +7-8, α=0.0416, α(K)=0.0283 4, α(L)=0.01001 14, α(M)=0.00250 4, α(N)=0.000628 9, α(O)=0.0001142 16, α(P)=7.15E-6 10, α(N+)=0.000749 11
  2104.25 (25/2+) 3.6 ps +7-6    366.3 1 E2 0.0626B(E2)(W.u.)=3.5×102 +6-7, α=0.0626, α(K)=0.0401 6, α(L)=0.01694 24, α(M)=0.00427 6, α(N)=0.001073 15, α(O)=0.000193 3, α(P)=1.117E-5 16, α(N+)=0.001277 18
  2363.16 (25/2-) < 1.1 ps   488.4 1 (E2) 0.0298B(E2)(W.u.)>2.8×102, α=0.0298, α(K)=0.0212 3, α(L)=0.00652 10, α(M)=0.001613 23, α(N)=0.000405 6, α(O)=7.43E-5 11, α(P)=4.97E-6 7, α(N+)=0.000484 7
  2546.85 (29/2+) < 1.4 ps   442.6 1 E2 0.0380B(E2)(W.u.)>3.6×102, α=0.0380, α(K)=0.0262 4, α(L)=0.00892 13, α(M)=0.00222 4, α(N)=0.000558 8, α(O)=0.0001017 15, α(P)=6.49E-6 9, α(N+)=0.000666 10

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(1/2+) ≈ 51 s
% ε = 100
% α ≈ 0.03
μ=1.55 6
E(level): possible GS band.
   299.33(3/2+)   E(level): possible GS band.
   334(9/2-) 15.60 s 12 
% α = 0.15 5
% IT < 99.9
% ε < 99.9
Q=-2.43 5, μ=(+)3.79 2
E(level): 9/2[505] band.
   728.10(11/2-)   E(level): 9/2[505] band.
   747.87(5/2+)   E(level): possible GS band.
   950.90(11/2-)   E(level): possible 11/2[505] band.
   996.34(13/2-) 2.0 ps 2  Qt=2.6 eb 3 (32S,4nγ).
E(level): 9/2[505] band.
  1059.65(13/2+) 0.69 ns 14  E(level): 13/2[606] band.
  1260.8(13/2-)   E(level): possible 11/2[505] band.
  1433.23(15/2-)   E(level): 1/2[530], α=-1/2 band.
  1444.53(15/2-)   E(level): 9/2[505] band.
  1447.46(17/2-) 19.6 ps +20-22  Qt=2.1 eb 1 (32S,4nγ).
E(level): 3/2[532], α=+1/2 band.
  1452.45(17/2+) 44 ps +5-6  XREF: γ(1345).
E(level): 1/2[660], α=+1/2 band.
  1463.85(15/2+)   XREF: γ(1434).
E(level): 13/2[606] band.
  1585.9(15/2-)   E(level): possible 11/2[505] band.
  1737.95(21/2+) 24.7 ps 24  Qt=5.6 eb 3 (32S,4nγ).
E(level): 1/2[660], α=+1/2 band.
  1822.03(19/2-)   E(level): 1/2[530], α=-1/2 band.
  1838.0(17/2+)   E(level): 13/2[606] band.
  1874.76(21/2-) 2.3 ps +7-6  Qt=6.4 eb +7-6 (32S,4nγ).
E(level): 3/2[532], α=+1/2 band.
  1948.6(17/2-)   E(level): possible 11/2[505] band.
  2104.25(25/2+) 3.6 ps +7-6  Qt=7.7 eb +9-6 (32S,4nγ).
E(level): 1/2[660], α=+1/2 band.
  2275.8(23/2-)   E(level): 1/2[530], α=-1/2 band.
  2363.16(25/2-) < 1.1 ps Qt>6.6 eb (32S,4nγ).
E(level): 3/2[532], α=+1/2 band.
  2546.85(29/2+) < 1.4 ps Qt>8.1 eb (32S,4nγ).
E(level): 1/2[660], α=+1/2 band.
  2792.9(27/2-)   E(level): 1/2[530], α=-1/2 band.
E(level)Jπ(level)T1/2(level)Comments
  2909.46(29/2-)   E(level): 3/2[532], α=+1/2 band.
  2947.8   XREF: γ(3492).
  3057.5(33/2+)   E(level): 1/2[660], α=+1/2 band.
  3363.6(31/2-)   E(level): 1/2[530], α=-1/2 band.
  3510.9(33/2-)   E(level): 3/2[532], α=+1/2 band.
  3627.4(37/2+)   E(level): 1/2[660], α=+1/2 band.
  3975.5(35/2-)   E(level): 1/2[530], α=-1/2 band.
  4138.5(37/2-)   E(level): 3/2[532], α=+1/2 band.
  4248.0(41/2+)   XREF: γ(4246).
E(level): 1/2[660], α=+1/2 band.
  4910.4(45/2+)   XREF: γ(4908).
E(level): 1/2[660], α=+1/2 band.
  5608.0(49/2+)   XREF: γ(5604).
E(level): 1/2[660], α=+1/2 band.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   299.33   299.5E(γ): From 187Pb ε decay.
   334    35E(γ): from level energy difference; Eγ≈30 from 187Tl IT decay.
   747.87   448.7E(γ): From 187Pb ε decay.
   747.7E(γ): From 187Pb ε decay.
   871.8   193.0E(γ): From 187Pb ε decay.
   996.34   268.3M(γ): From (35Cl,4nγ)
  1059.65   331.5M(γ): from γ(θ) and DCO ratio, E1 favored by intensity balance in (32S,4nγ).
  1072.6   343.5E(γ): for doubly-placed γ.. From 187Pb ε decay.
  2582.5   478.2M(γ): α(exp)=0.15 18, determined from an intensity balance (32S,4nγ).

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